Windsor P-bulb Garage Door Bottom Weather Seal (Item#WINDSOR-PERFT) from Garage Door Supply Company is exclusively designed to work with Windsor garage doors. Windsor P-bulb bottom seal is made of a tough and durable black vinyl compound. The total height of the seal, including the P-bulb, is 1-3/4". Order Windsor P-bulb Garage Door Bottom Weather Seal (formerly known as WINDSOR-PERFT) in a 16' long section to fit a 15' door (included is an additional 1 ft. of weather seal to allow for shrinkage and trimming of the product during installation). You can be assured that you are using the proper seal if your old seal looks like the P-bulb seal. The age of your Windsor garage door does not matter because Windsor only makes one size P-bulb shaped bottom seal and installation is easy. Garage Door Supply Company suggests two people should complete the installation of this product. One person will feed the seal to the other person who will pull it through the channel. Please see our complete selection of Weather Seal products for more sizes. Order garage door bottom weather seal from Garage Door Supply Company by the foot or pre-cut to a specific length. We also carry economically priced 100' bulk rolls and kits that include everything you need for installation. If you aren't sure which product is right for your application, our helpful staff is here to help! Call or send a direct message through the chat feature built into our website at 1-888-346-3173 during regular business hours (Monday through Friday between the hours of 8 a.m. and 4:30 p.m., Eastern time). If you are unable to reach us during normal business hours, send an e-mail with your questions, comments, or suggestions by filling out the form here!